There were no exact numbers on how many people had been evacuated from what's being called the Summit Fire as of Wednesday evening, but authorities said a 200-unit mobile home park in Cherry Valley had been cleared.

They also said some residents in Banning were told to leave their homes. Banning is about 25 miles west of Palm Springs.

An evacuation center has been opened at the Banning Community Services Center, officials said.

The fire department said on its website that 425 firefighters were involved in efforts to douse the flames.